node/node.go

   1 package node
   2
   3 import (
   4         "errors"
   5         "net"
   6         "net/http"
   7         _ "net/http/pprof"
   8         "path/filepath"
   9
  10         log "github.com/sirupsen/logrus"
  11         cmn "github.com/tendermint/tmlibs/common"
  12         browser "github.com/toqueteos/webbrowser"
  13
  14         "github.com/bytom/bytom/proposal/blockproposer"
  15         "github.com/prometheus/prometheus/util/flock"
  16
  17         "github.com/bytom/bytom/accesstoken"
  18         "github.com/bytom/bytom/account"
  19         "github.com/bytom/bytom/api"
  20         "github.com/bytom/bytom/asset"
  21         "github.com/bytom/bytom/blockchain/pseudohsm"
  22         cfg "github.com/bytom/bytom/config"
  23         "github.com/bytom/bytom/consensus"
  24         "github.com/bytom/bytom/contract"
  25         "github.com/bytom/bytom/database"
  26         dbm "github.com/bytom/bytom/database/leveldb"
  27         "github.com/bytom/bytom/env"
  28         "github.com/bytom/bytom/event"
  29         bytomLog "github.com/bytom/bytom/log"
  30         "github.com/bytom/bytom/net/websocket"
  31         "github.com/bytom/bytom/netsync"
  32         "github.com/bytom/bytom/protocol"
  33         w "github.com/bytom/bytom/wallet"
  34 )
  35
  36 const (
  37         webHost   = "http://127.0.0.1"
  38         logModule = "node"
  39 )
  40
  41 // Node represent bytom node
  42 type Node struct {
  43         cmn.BaseService
  44
  45         config          *cfg.Config
  46         eventDispatcher *event.Dispatcher
  47         syncManager     *netsync.SyncManager
  48
  49         wallet          *w.Wallet
  50         accessTokens    *accesstoken.CredentialStore
  51         notificationMgr *websocket.WSNotificationManager
  52         api             *api.API
  53         chain           *protocol.Chain
  54         blockProposer   *blockproposer.BlockProposer
  55         miningEnable    bool
  56 }
  57
  58 // NewNode create bytom node
  59 func NewNode(config *cfg.Config) *Node {
  60         if err := initNodeConfig(config); err != nil {
  61                 cmn.Exit(cmn.Fmt("Failed to init config: %v", err))
  62         }
  63
  64         // Get store
  65         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  66                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  67         }
  68         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  69         store := database.NewStore(coreDB)
  70
  71         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  72         accessTokens := accesstoken.NewStore(tokenDB)
  73
  74         dispatcher := event.NewDispatcher()
  75         txPool := protocol.NewTxPool(store, dispatcher)
  76
  77         chain, err := protocol.NewChain(store, txPool, dispatcher)
  78         if err != nil {
  79                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  80         }
  81
  82         startTraceUpdater(chain, config)
  83
  84         var accounts *account.Manager
  85         var assets *asset.Registry
  86         var wallet *w.Wallet
  87
  88         hsm, err := pseudohsm.New(config.KeysDir())
  89         if err != nil {
  90                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
  91         }
  92
  93         if !config.Wallet.Disable {
  94                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
  95                 accounts = account.NewManager(walletDB, chain)
  96                 assets = asset.NewRegistry(walletDB, chain)
  97                 contracts := contract.NewRegistry(walletDB)
  98                 wallet, err = w.NewWallet(walletDB, accounts, assets, contracts, hsm, chain, dispatcher, config.Wallet.TxIndex)
  99                 if err != nil {
 100                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet")
 101                 }
 102
 103                 // trigger rescan wallet
 104                 if config.Wallet.Rescan {
 105                         wallet.RescanBlocks()
 106                 }
 107         }
 108
 109         fastSyncDB := dbm.NewDB("fastsync", config.DBBackend, config.DBDir())
 110         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher, fastSyncDB)
 111         if err != nil {
 112                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 113         }
 114
 115         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 116
 117         // run the profile server
 118         profileHost := config.ProfListenAddress
 119         if profileHost != "" {
 120                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 121                 // go tool pprof http://profileHose/debug/pprof/heap
 122                 go func() {
 123                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 124                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 125                         }
 126                 }()
 127         }
 128
 129         node := &Node{
 130                 eventDispatcher: dispatcher,
 131                 config:          config,
 132                 syncManager:     syncManager,
 133                 accessTokens:    accessTokens,
 134                 wallet:          wallet,
 135                 chain:           chain,
 136                 miningEnable:    config.Mining,
 137                 notificationMgr: notificationMgr,
 138         }
 139
 140         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 141         node.blockProposer = blockproposer.NewBlockProposer(chain, accounts, dispatcher)
 142         return node
 143 }
 144
 145 func startTraceUpdater(chain *protocol.Chain, cfg *cfg.Config) {
 146         db := dbm.NewDB("trace", cfg.DBBackend, cfg.DBDir())
 147         store := contract.NewTraceStore(db)
 148         tracerService := contract.NewTraceService(contract.NewInfrastructure(chain, store))
 149         traceUpdater := contract.NewTraceUpdater(tracerService, chain)
 150         go traceUpdater.Sync()
 151 }
 152
 153 func initNodeConfig(config *cfg.Config) error {
 154         if err := lockDataDirectory(config); err != nil {
 155                 cmn.Exit("Error: " + err.Error())
 156         }
 157
 158         if err := bytomLog.InitLogFile(config); err != nil {
 159                 log.WithField("err", err).Fatalln("InitLogFile failed")
 160         }
 161
 162         initActiveNetParams(config)
 163         initCommonConfig(config)
 164         return nil
 165 }
 166
 167 // Lock data directory after daemonization
 168 func lockDataDirectory(config *cfg.Config) error {
 169         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 170         if err != nil {
 171                 return errors.New("datadir already used by another process")
 172         }
 173         return nil
 174 }
 175
 176 func initActiveNetParams(config *cfg.Config) {
 177         var exist bool
 178         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 179         if !exist {
 180                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 181         }
 182 }
 183
 184 func initCommonConfig(config *cfg.Config) {
 185         cfg.CommonConfig = config
 186 }
 187
 188 // Lanch web broser or not
 189 func launchWebBrowser(port string) {
 190         webAddress := webHost + ":" + port
 191         log.Info("Launching System Browser with :", webAddress)
 192         if err := browser.Open(webAddress); err != nil {
 193                 log.Error(err.Error())
 194                 return
 195         }
 196 }
 197
 198 func (n *Node) initAndstartAPIServer() {
 199         n.api = api.NewAPI(n.syncManager, n.wallet, n.blockProposer, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 200
 201         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 202         env.Parse()
 203         n.api.StartServer(*listenAddr)
 204 }
 205
 206 func (n *Node) OnStart() error {
 207         if n.miningEnable {
 208                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 209                         n.miningEnable = false
 210                         log.Error(err)
 211                 } else {
 212                         n.blockProposer.Start()
 213                 }
 214         }
 215         if !n.config.VaultMode {
 216                 if err := n.syncManager.Start(); err != nil {
 217                         return err
 218                 }
 219         }
 220
 221         n.initAndstartAPIServer()
 222         if err := n.notificationMgr.Start(); err != nil {
 223                 return err
 224         }
 225
 226         if !n.config.Web.Closed {
 227                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 228                 if err != nil {
 229                         log.Error("Invalid api address")
 230                         return err
 231                 }
 232                 launchWebBrowser(port)
 233         }
 234         return nil
 235 }
 236
 237 func (n *Node) OnStop() {
 238         n.notificationMgr.Shutdown()
 239         n.notificationMgr.WaitForShutdown()
 240         n.BaseService.OnStop()
 241         if n.miningEnable {
 242                 n.blockProposer.Stop()
 243         }
 244         if !n.config.VaultMode {
 245                 n.syncManager.Stop()
 246         }
 247         n.eventDispatcher.Stop()
 248 }
 249
 250 func (n *Node) RunForever() {
 251         // Sleep forever and then...
 252         cmn.TrapSignal(func() {
 253                 n.Stop()
 254         })
 255 }